Granted Patent
Utility
US 4,566,241 · App. 06/596,635
Progressive demountable partition
Inventor:
Joseph W. Schneller
Patented Case
View Patent ↗
Granted: Jan 28, 1986
Filed: Apr 4, 1984
Inventor
Joseph W. Schneller
Assignee (at issue)
National Gypsum Company
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.